AIM: To investigate the effect of both myopic and hyperopic anisom etropia on binocular vision. METHODS: Totally 238 patients with corrected anisom etropia and 30 norm al children were tested with both stereogram and synoptophore for their near stereoacuity and binocular vision. The correlation of anisom etropia and binocular vision was studied statistically.RESULTS: The number of normal near stereoacuity and distance fusion range of m yopic anisom etropia was significantly higher than that of hyperopic ani...